MsSIM allows full loading of multiple GSM carriers with a single test system. On each carrier, hundreds of simulated mobiles can concurrently generate load over the radio interface for both Circuit Switched and Packet Switched Services. MsSIM supports the GSM/GPRS/EDGE, Evolved EDGE and VAMOS standards, and the most recent additions include EC-GSM-IoT.


  • Multi-terminal operation over the radio interface
  • Full featured CS and PS protocol stacks
    • Complete manageability at all levels
  • Support latest Release 13 features (VAMOS, Evolved EDGE, EC-GSM-IoT)
  • Monitoring and decoding of all messages exchanged over the Um radio interface between MsSIM and RAN
  • Test system sharable among many users
  • Easy integration in test automation environments


  • Frequency bands (3GPP 45.005)
    • GSM 850, GSM 900, GSM 1800, GSM 1900
  • Static TRX frequency mapping corresponding to BTS configuration
  • The two VAMOS radio paths can be mapped onto a single TRX for uplink
  • Timing Advance configuration
  • Configurable Power Level and Measurements Reports
  • GMSK, 8PSK, 16QAM, 32QAM
  • RF Measurements (Signal power, SNR, Baseband RMS)
  • Frequency hopping
  • Frequency band scanner
  • I/Q Tracer, extensive layer 1 statistics
  • Frequency and time offset testing support


  • EC-GSM-IoT
  • Evolved EDGE
    • Dual Carrier, FANR, RTTI
    • UAS/DAS EDGE Coding Schemes (16/32 QAM)
    • AQPSK Support with TCH/F or TCH/H
    • Primary/Secondary TSC Set, SACCH Shift
    • Any MS combination is supported (Legacy, Type I, Type II)
    • Split or combined uplink radio path
  • DTM